Can't Stay Connected

[Guest]

For some reason I am unable to access alot of internet
programs (MSN Messenger, AIM, Hello!, ICQ)that I had
access to before. The only program that seems to be
working is Yahoo. When I try to log onto Hello! I
get "networked error occured [0x0000274c]." And when I
try to log onto MSN Messenger I get an "8002.." or
something type of error.

In addition, I am unable to access some webpages such as
the results from Google, Downloads from MSN website
(www.msn.com is not showing correctly as well, the images
and backgrounds will not load) etc. I am currently
running Windows XP Professional SP1 on both networked
computers, and having this problem with both the wired and
wireless computer. I have had the MN-500 router for two
years and have only started experiencing this problem now.

When I look at the Base Station Log I seem to get:

2004/12/10 14:13:22 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:3903>
dst:<207.161.40.154:135>
2004/12/10 14:13:42 Connection attempt to base station
from WAN blocked -- src:<207.161.33.40:3836>
dst:<207.161.40.154:445>
2004/12/10 14:13:45 Connection attempt to base station
from WAN blocked -- src:<207.161.33.40:3836>
dst:<207.161.40.154:445>
2004/12/10 14:13:48 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:2894>
dst:<207.161.40.154:135>
2004/12/10 14:13:51 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:2894>
dst:<207.161.40.154:135>
..... over and over again. Or something similar to:

2003/02/17 18:27:20 UPnP AddPortMapping:
ExternalPort:1234, TCP, InternalPort:4321,
InternalClient:192.168.2.100

..... followed with a:
18:28:09 UPnP DeletePortMapping:
ExternalPort:1234, TCP

Is there something wrong with my router? I did not change
any settings, and as I have mentioned, it had been working
fine for the past two years. Is there a potential virus
or spyware residing on my network? Please advice..

 

[Robert L [MS-MVP]]

quoted from http://www.ChicagoTech.net
Can't access some web sitesSymptoms: 1) If you're using MS ICS or Windows
server as router to access the Internet, your clients may not be able to
access certain web sites. However, the ICS host or the server doesn't have
this problem.
2) After installed a new router or cable modem replacing dial-up to access
the Internet, you can't access some web sites.
3) You also find that most web sites you can't access are block to ping or
they are security sites using HTTPS.

Causes: 1) The problem occurs because many web servers block ICMP messages
and the packets are dropped. As a result, the requested web site doesn't
load.
2) This problem is caused also by an incompatible MTU networking setting.
You may try to install the latest SP. If you use MS ICS, you may want to
configure all your Client computers to use the new, lower MTU as the default
for all Internet communication. To modify the MTU size, locate the following
registry key: HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\
Tcpip\ Parameters\ Interfaces. If you use a router like Cisco DSL Router,
you may want to adjusting the PPPoE MTU Size. For example, to adjusting the
PPPoE MTU Size on the Cisco DSL Router, do

interface ethernet0
no shut
ip address <ip address> <subnet mask>
ip adjust-mss 1452
--
For more and other information, go to http://www.ChicagoTech.net


Don't send e-mail or reply to me except you need consulting services.
Posting on MS newsgroup will benefit all readers and you may get more help.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
http://www.ChicagoTech.net
Networking Solutions, http://www.chicagotech.net/networksolutions.htm
VPN Solutions, http://www.chicagotech.net/vpnsolutions.htm
VPN Process and Error Analysis, http://www.chicagotech.net/VPN process.htm
VPN Troubleshooting, http://www.chicagotech.net/vpn.htm
This posting is provided "AS IS" with no warranties.

> For some reason I am unable to access alot of internet
programs (MSN Messenger, AIM, Hello!, ICQ)that I had
access to before. The only program that seems to be
working is Yahoo. When I try to log onto Hello! I
get "networked error occured [0x0000274c]." And when I
try to log onto MSN Messenger I get an "8002.." or
something type of error.

In addition, I am unable to access some webpages such as
the results from Google, Downloads from MSN website
(www.msn.com is not showing correctly as well, the images
and backgrounds will not load) etc. I am currently
running Windows XP Professional SP1 on both networked
computers, and having this problem with both the wired and
wireless computer. I have had the MN-500 router for two
years and have only started experiencing this problem now.

When I look at the Base Station Log I seem to get:

2004/12/10 14:13:22 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:3903>
dst:<207.161.40.154:135>
2004/12/10 14:13:42 Connection attempt to base station
from WAN blocked -- src:<207.161.33.40:3836>
dst:<207.161.40.154:445>
2004/12/10 14:13:45 Connection attempt to base station
from WAN blocked -- src:<207.161.33.40:3836>
dst:<207.161.40.154:445>
2004/12/10 14:13:48 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:2894>
dst:<207.161.40.154:135>
2004/12/10 14:13:51 Connection attempt to base station
from WAN blocked -- src:<207.161.35.240:2894>
dst:<207.161.40.154:135>
.... over and over again. Or something similar to:

2003/02/17 18:27:20 UPnP AddPortMapping:
ExternalPort:1234, TCP, InternalPort:4321,
InternalClient:192.168.2.100

.... followed with a:
18:28:09 UPnP DeletePortMapping:
ExternalPort:1234, TCP

Is there something wrong with my router? I did not change
any settings, and as I have mentioned, it had been working
fine for the past two years. Is there a potential virus
or spyware residing on my network? Please advice..